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Coconut Ermine Frosting is the unsung hero of silky, stable frostings. Unlike the sugar bombs we’ve all battled before, this one’s smooth, subtly sweet, and pipes like a dream. It’s a tropical twist on my classic Ermine Frosting, made with coconut cream instead of milk. It’s basically a cloud you can swirl onto cake.

A swirl of coconut buttercream on a cupcake.
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Here’s Why This Ermine Coconut Frosting Recipe Works

Velvety texture: Cooking the flour and coconut cream into a thickened custard base is the secret to that smooth, glide-over-the-cake finish.

Less sugar, more flavor: Without the mountain of powdered sugar, the coconut and vanilla notes actually get a chance to shine.

Super stable: The cooked flour frosting holds up beautifully for piping, stacking, and even warm-ish kitchens.

Rich coconut flavor: Coconut cream plus coconut extract delivers double the tropical punch without any artificial weirdness. It’s a perfect for frosting coconut cake or cupcakes.

Ingredients used to make coconut buttercream frosting.

Recipe Tips

Cool it completely: The coconut cream and flour mixture must be room temp before mixing with the butter. If it’s warm, the butter melts and everything goes sad and soupy.

Cream that butter properly: Whip it until it’s light, pale, and fluffy. This sets the stage for that dreamy texture.

Add slowly: Go tablespoon by tablespoon with the cooled coconut mixture. Dumping it in all at once can break the emulsion.

Use full-fat coconut cream: This is not the time for lite anything. Full-fat gives structure and flavor.

Want something richer or tangier? Go with my Biscoff Buttercream for warm, spiced sweetness, or Cream Cheese Buttercream for a smooth, tangy finish.

Old Fashioned Coconut Buttercream

If you’re looking for a frosting that won’t make your cake taste like a sugar bomb, This old fashioned coconut Ermine Frosting is it. It’s light, luscious, and full of coconutty goodness. Plus, your mixer does most of the work.

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Chocolate cupcake with tall white frosting swirl in a white liner.
Prep Time: 10 minutes
Cook Time: 10 minutes
Additional Time: 20 minutes
Total Time: 40 minutes
5 from 6 votes

Coconut Ermine Frosting

Get ready to mix things up with this unique twist on coconut buttercream! This is an old-fashioned recipe, embracing the cooked milk, ermine style, where, yes, flour is the secret ingredient. Don't knock it till you've tried it!
This method delivers a frosting that's unbelievably fluffy and notably less sweet than your typical buttercream, offering a lush coconut flavor that's just right.

If you make this recipe, please leave a star rating and comment.

Servings: 5 cups of frosting
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Ingredients 

  • ½ cup All-purpose flour
  • 1 (14 ounce) can canned coconut cream
  • 1 ½ cups butter, (24 tablespoons)
  • 1 ¾ cups granulated sugar
  • ¼ teaspoon salt
  • 1 ¾ teaspoons vanilla extract
  • ½ teaspoon coconut extract

Instructions 

  • In a small saucepan, whisk flour into the coconut cream and heat over medium heat, stirring constantly, until it thickens. It should thicken into a pudding-like consistency.
    Remove from heat and let it cool to room temperature. I transfer it to the freezer and stir it every few minutes. It must be completely cool before you use it in the next step.
    Making the boiled milk roux for ermine frosting.
  • While the mixture is cooling, cream the butter, sugar, and salt together until light and fluffy. This is an important step. You need to incorporate air into the butter and make sure it is light in color.
    Spooning cooked milk roux in a bowl for ermine frosting.
  • Slowly add the completely cooled coconut cream/flour mixture a couple tablespoons at a time, and whip it until it looks like whipped cream.
    Spooning cooked milk roux in a bowl for ermine frosting.
  • Beat in the vanilla and coconut extracts.
    adding vanilla extract to a boiled milk frosting

Notes

Let it cool completely: The coconut cream and flour mixture needs to be at room temp before meeting the butter. Warm = melted butter = sad, soupy mess.
Whip the butter really well: Light, pale, and fluffy is the goal. It gives you that dreamy, cloud-like texture.
Add the cooked flour roux slowly: Go one tablespoon at a time with the cooled coconut mix. Dumping it in all at once can wreck the emulsion.
Stick with full-fat coconut cream: Full-fat brings the structure and the flavor.

Nutrition

Serving: 1serving, Calories: 150kcal, Carbohydrates: 20g, Protein: 1g, Fat: 8g, Saturated Fat: 6g, Polyunsaturated Fat: 2g, Cholesterol: 12mg, Sodium: 70mg, Sugar: 17g

Nutrition information is automatically calculated, so should only be used as an approximation.

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Storing Leftovers

Refrigerate: Store the frosting in an airtight container for up to 5 days. Bring it to room temp and re-whip before using.

Freeze: Freeze in a sealed container for up to 1 month. Thaw overnight in the fridge, then let it come to room temp before re-whipping.

About Dahn Boquist

Dahn Boquist is a retired nurse turned recipe developer, home cook, and baker with years of hands-on experience creating and testing from-scratch recipes. She specializes in whole-food cooking with creative twists on classic dishes. When she’s not in the kitchen, she enjoys sharing meals with family, exploring the Pacific Northwest, and spending time with her grandchildren.

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